There’s no doubt that there are many health benefits to a well-planned vegetarian diet — and you live longer as well. But in most parts of Western society, vegetarians are in a minority — say between 2 and 10 per cent.
But this could change, thanks to the rapidly increasing spread of an Australian tick. For some people, one bite from this tick makes them allergic to meat for the rest of their lives.
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http://www.abc.net.au/science/articles/2014/02/25/3951271.htm